Labs.
Practical tools for building, understanding, connecting and improving systems.
From a quick data fix to your next system architecture. Useful workspaces that run on your device.
QR Code Studio
Create static QR codes for links, contacts and Wi-Fi, with colours, logos and image downloads.
Systems & Engineering · Ready · Browser-basedSystem Architecture Builder
Design connected systems with draggable components, templates, local saving and diagram exports.
Business & Productivity · Ready · Browser-basedBusiness Workflow Mapper
Map tasks, decisions, approvals and bottlenecks with editable, exportable workflows.
Business & Productivity · Ready · Browser-basedAutomation Opportunity Analyzer
Estimate automation suitability and potential monthly time and labour savings from your assumptions.
Find your next useful tool.
21 tools to explore
JSON Formatter
Format, validate and inspect structured JSON.
Open Tool →Developer Tools · Ready · Browser-basedUUID Generator
Generate cryptographically random version 4 identifiers.
Open Tool →Developer Tools · Ready · Browser-basedBase64 Encoder
Encode or decode Unicode text.
Open Tool →AI & Prompt Engineering · Ready · Browser-basedAI Prompt Builder
Turn an objective, context and constraints into a reusable prompt.
Open Tool →AI & Prompt Engineering · Ready · Browser-basedContext Budget Estimator
Estimate text size and plan a context budget. Estimates are not model token counts.
Open Tool →Developer Tools · Ready · Browser-basedJSONL Dataset Validator
Check line-delimited JSON before using it in a data pipeline.
Open Tool →AI & Prompt Engineering · Ready · Browser-basedText Redactor
Mask common email and phone patterns before sharing text. Review results manually.
Open Tool →Systems & Engineering · Ready · Browser-basedSHA-256 Hash
Calculate a SHA-256 digest of text on your device.
Open Tool →Developer Tools · Ready · Browser-basedJWT Inspector
Read token headers and payloads. Does not verify signatures or trustworthiness.
Open Tool →Developer Tools · Ready · Browser-basedURL Encoder
Encode or decode a URL component safely.
Open Tool →Business & Productivity · Ready · Browser-basedText Comparison
Compare two texts by line to review prompt or content changes.
Open Tool →Business & Productivity · Ready · Browser-basedQR Code Studio
Create static QR codes for links, contacts and Wi-Fi, with colours, logos and image downloads.
Open Tool →Systems & Engineering · Ready · Browser-basedPassword & Security Toolkit
Generate secure passwords, passphrases and random tokens; inspect strength and hash text locally.
Open Tool →Business & Productivity · Ready · Browser-basedText & Data Toolkit
Count, clean, sort and transform text, remove duplicate lines and replace literal text.
Open Tool →Developer Tools · Ready · Browser-basedDeveloper Encoding Toolkit
Encode URLs, HTML entities and JSON strings; convert Unix timestamps and generate hashes.
Open Tool →Developer Tools · Ready · Browser-basedCSV & JSON Converter
Convert structured data with local file loading, column mapping and downloadable output.
Open Tool →Developer Tools · Ready · Browser-basedCron Expression Builder
Build and validate five-field schedules and preview executions in your timezone.
Open Tool →Developer Tools · Ready · Browser-basedAPI Response Viewer
Format response JSON, explore paths, filter values, compare payloads and inspect HTTP statuses.
Open Tool →Systems & Engineering · Ready · Browser-basedSystem Architecture Builder
Design connected systems with draggable components, templates, local saving and diagram exports.
Open Tool →Business & Productivity · Ready · Browser-basedBusiness Workflow Mapper
Map tasks, decisions, approvals and bottlenecks with editable, exportable workflows.
Open Tool →Business & Productivity · Ready · Browser-basedAutomation Opportunity Analyzer
Estimate automation suitability and potential monthly time and labour savings from your assumptions.
Open Tool →